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Struzzi, C., Erbahar, D., Scardamaglia, M., Amati, M., Gregoratti, L., Lagos, M. J., Van Tendeloo, G., Snyders, R., Ewels, C. & Bittencourt, C. (2015) Selective decoration of isolated carbon nanotubes by potassium evaporation: scanning photoemission microscopy and density functional theory. J. Mater. Chem. C, 3 2518–2527.
Added by: Laurent Cournède (2016-03-10 18:36:43) |
| Type de référence: Article DOI: 10.1039/c4tc02478h Numéro d'identification (ISBN etc.): 2050-7526 Clé BibTeX: Struzzi2015 Voir tous les détails bibliographiques  |
Catégories: PMN Mots-clés: bundles, deposition, electronic-properties, esca microscopy, field-emission properties, graphene, graphite, nitrogen, pseudopotentials, systems Créateurs: Amati, Bittencourt, Erbahar, Ewels, Gregoratti, Lagos, Scardamaglia, Snyders, Struzzi, Van Tendeloo Collection: J. Mater. Chem. C |
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| Résumé |
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Site selective doping of aligned carbon nanostructures represents a promising approach for their implementation in actual devices. In the present work we report on alkali metals decoration on low density vertically aligned carbon nanotubes, disclosing the possibility of engineering site selective depositions of potassium atoms on the carbon systems. Photoemission measurements were combined with microscopy demonstrating the effective spatial control of alkali deposition. The changes of electronic structures of locally doped carbon regions were studied by exploiting the ability of the scanning photoemission microscopy technique. From the analysis of experimental data supported by theoretical calculations, we show the tuning of the charge transfer from potassium to carbon atoms belonging to neighboring nanotubes or along the same tube structure.
Added by: Laurent Cournède |